$77+ Cheap flights from Ontario (ONT) to Wisconsin
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Apr 17 — Apr 241
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to WisconsinExplore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- MSP
1 stop12h 44m
Frontier
Tue 5/1910:14 am
MSP
- ONT
1 stop15h 35m
Frontier
Deal found 3/13![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Tue 4/218:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/14![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Tue 4/288:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/13![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:33 pm
ONT
- MSP
1 stop25h 11m
Frontier
Wed 5/69:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/13![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:33 pm
ONT
- MSP
1 stop28h 25m
Frontier
Mon 4/271:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/17![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/13![Frontier logo]()
$207
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Fri 4/1711:47 am
MSP
- ONT
1 stop14h 11m
Frontier
Deal found 3/16![Frontier logo]()
$212
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 4/288:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/16![Frontier logo]()
$214
This CheapOair deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MKE
1 stop14h 35m
Frontier
Mon 4/275:05 pm
MKE
- ONT
1 stop8h 50m
Frontier
Deal found 3/16![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:03 pm
ONT
- MKE
1 stop11h 59m
Frontier
Sun 4/52:00 pm
MKE
- ONT
1 stop20h 04m
Frontier
Deal found 3/17![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:50 am
ONT
- ORD
1 stop7h 47m
Frontier
Mon 5/119:42 pm
ORD
- ONT
1 stop14h 23m
Frontier
Deal found 3/14![Frontier logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:47 am
ONT
- ORD
1 stop15h 38m
Multiple Airlines
Sat 4/258:55 am
ORD
- ONT
2 stops11h 54m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$267
Best flights from Ontario to WisconsinDiscover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
Discover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:34 pm
ONT
- MKE
1 stop5h 47m
United Airlines
Wed 4/2912:13 pm
MKE
- ONT
2 stops11h 37m
United Airlines
Deal found 3/17![United Airlines logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ONT
- MSP
1 stop9h 58m
Alaska Airlines
Wed 6/36:54 pm
MSP
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$338
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:50 pm
ONT
- MKE
1 stop6h 25m
Southwest
Tue 5/264:05 pm
MKE
- ONT
2 stops8h 05m
Southwest
Deal found 3/15![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:05 am
ONT
- ORD
1 stop9h 43m
Delta
Sat 4/255:15 am
ORD
- ONT
1 stop8h 21m
Delta
Deal found 3/14![Delta logo]()
$355
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:54 am
ONT
- GRB
2 stops9h 04m
American Airlines
Sat 5/169:42 am
GRB
- ONT
2 stops11h 52m
American Airlines
Deal found 3/15![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:29 pm
ONT
- MSP
1 stop5h 28m
Delta
Tue 4/2811:00 am
MSP
- ONT
1 stop7h 25m
Delta
Deal found 3/16![Delta logo]()
$375
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:30 am
ONT
- ORD
Nonstop4h 15m
United Airlines
Wed 6/108:13 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 3/17![United Airlines logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:59 pm
ONT
- MKE
1 stop16h 14m
Alaska Airlines
Wed 5/67:00 am
MKE
- ONT
1 stop9h 30m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$390
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:40 pm
ONT
- MKE
2 stops7h 50m
Southwest
Mon 5/44:50 pm
MKE
- ONT
2 stops8h 15m
Southwest
Deal found 3/16![Southwest logo]()
$415
This Alaska Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ONT
- MSP
1 stop9h 58m
Alaska Airlines
Fri 6/55:16 pm
MSP
- ONT
1 stop8h 42m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/144:57 pm
ONT
- MSP
1 stop5h 38m
Delta
Sat 5/168:20 am
MSP
- ONT
1 stop5h 59m
Delta
Deal found 3/15![Delta logo]()
$400
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:10 am
ONT
- MKE
2 stops7h 45m
Southwest
Mon 4/274:50 pm
MKE
- ONT
2 stops8h 15m
Southwest
Deal found 3/16![Southwest logo]()
$415
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:34 pm
ONT
- ORD
1 stop5h 46m
United Airlines
Sat 4/187:00 am
ORD
- ONT
2 stops12h 47m
United Airlines
Deal found 3/16![United Airlines logo]()
$422
This Alaska Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ONT
- MSP
1 stop9h 58m
Alaska Airlines
Thu 6/46:54 pm
MSP
- ONT
1 stop7h 02m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:49 pm
ONT
- GRB
1 stop8h 12m
Delta
Sat 5/1611:11 am
GRB
- ONT
2 stops13h 34m
Delta
Deal found 3/15![Delta logo]()
$422
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:34 pm
ONT
- MKE
1 stop6h 58m
United Airlines
Mon 4/205:37 pm
MKE
- ONT
1 stop6h 54m
United Airlines
Deal found 3/17![United Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:40 pm
ONT
- MSP
2 stops8h 20m
Southwest
Mon 4/276:10 pm
MSP
- ONT
2 stops6h 55m
Southwest
Deal found 3/13![Southwest logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
ONT
- MSP
1 stop7h 16m
Alaska Airlines
Fri 4/175:12 pm
MSP
- ONT
1 stop8h 47m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:49 pm
ONT
- GRB
1 stop8h 12m
Delta
Sat 5/911:06 am
GRB
- ONT
2 stops12h 42m
Delta
Deal found 3/14![Delta logo]()
$423
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:49 pm
ONT
- GRB
2 stops13h 11m
United Airlines
Sun 4/52:48 pm
GRB
- ONT
1 stop9h 43m
United Airlines
Deal found 3/17![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:29 pm
ONT
- MSP
1 stop5h 28m
Delta
Sun 6/78:20 pm
MSP
- ONT
1 stop5h 24m
Delta
Deal found 3/17![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/115:10 am
ONT
- MSN
1 stop7h 28m
United Airlines
Tue 4/145:55 pm
MSN
- ONT
1 stop6h 36m
United Airlines
Deal found 3/13![United Airlines logo]()
$439
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:00 am
ONT
- MSP
1 stop7h 16m
Alaska Airlines
Tue 4/285:11 pm
MSP
- ONT
1 stop7h 21m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:40 pm
ONT
- MKE
2 stops7h 50m
Southwest
Fri 5/83:50 pm
MKE
- ONT
2 stops9h 15m
Southwest
Deal found 3/16![Southwest logo]()
$487
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:59 pm
ONT
- CWA
2 stops11h 44m
American Airlines
Sun 4/126:32 pm
CWA
- ONT
2 stops19h 02m
American Airlines
Deal found 3/13![American Airlines logo]()
$696
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2212:40 pm
ONT
- MKE
2 stops7h 35m
Southwest
Sun 5/244:05 pm
MKE
- ONT
2 stops7h 20m
Southwest
Deal found 3/15![Southwest logo]()
$487
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:10 am
ONT
- MSN
1 stop7h 28m
United Airlines
Sat 4/189:00 am
MSN
- ONT
2 stops10h 47m
United Airlines
Deal found 3/13![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am
ONT
- GRB
2 stops13h 58m
Delta
Sun 9/65:30 am
GRB
- ONT
2 stops12h 44m
Delta
Deal found 3/13![Delta logo]()
$444
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:00 am
ONT
- MSP
1 stop7h 01m
Alaska Airlines
Mon 8/174:57 pm
MSP
- ONT
1 stop8h 14m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$467
This American Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:56 am
ONT
- CWA
2 stops10h 39m
American Airlines
Sun 4/511:31 am
CWA
- ONT
2 stops11h 53m
American Airlines
Deal found 3/16![American Airlines logo]()
$714
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated March 18, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:03 pm
ONT
- MKE
1 stop11h 59m
Frontier
Sun 4/52:00 pm
MKE
- ONT
1 stop20h 04m
Frontier
Deal found 3/17![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Tue 4/218:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/14![Frontier logo]()
$171
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Mon 4/206:45 am
MSP
- ONT
1 stop19h 10m
Frontier
Deal found 3/16![Frontier logo]()
$223
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Fri 4/1711:47 am
MSP
- ONT
1 stop14h 11m
Frontier
Deal found 3/16![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sun 4/266:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/13![Frontier logo]()
$207
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Tue 4/288:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/16![Frontier logo]()
$214
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sat 4/257:50 am
MSP
- ONT
1 stop25h 36m
Frontier
Deal found 3/16![Frontier logo]()
$217
This Gotogate deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- MSP
1 stop15h 29m
Frontier
Tue 4/288:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/16![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MKE
1 stop14h 35m
Frontier
Mon 4/275:05 pm
MKE
- ONT
1 stop8h 50m
Frontier
Deal found 3/16![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Tue 4/288:15 am
MSP
- ONT
1 stop17h 40m
Frontier
Deal found 3/13![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:33 pm
ONT
- MSP
1 stop28h 25m
Frontier
Mon 4/271:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/17![Frontier logo]()
$205
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sun 5/36:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/17![Frontier logo]()
$221
One-way flights from Ontario to WisconsinSearch for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/13![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/13![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/13![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1310:50 am
ONT
- ORD
1 stop7h 47m
Frontier
Deal found 3/13![Frontier logo]()
$93
This Trip.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/16![Frontier logo]()
$99
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/13![Frontier logo]()
$100
This Trip.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/18![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:50 am
ONT
- ORD
1 stop7h 47m
Frontier
Deal found 3/17![Frontier logo]()
$102
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:44 am
ONT
- ORD
1 stop16h 24m
Frontier
Deal found 3/15![Frontier logo]()
$103
This WAYA deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:44 pm
ONT
- ORD
1 stop8h 24m
Frontier
Deal found 3/17![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/17![Frontier logo]()
$105
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:44 pm
ONT
- ORD
1 stop8h 24m
Frontier
Deal found 3/17![Frontier logo]()
$105
Find flight deals from Ontario to Wisconsin
Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $166 (Kiwi.com) |
One-way from | $77 (Trip.com) |
Popular in | February |
Cheapest in | August |
Average price | $452 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 18, 2026.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Thu 4/23
1:34 pm-9:21 pm
1 stop5h 47m
Milwaukee-Mitchell
Wed 4/29
12:13 pm-9:50 pm
2 stops11h 37m
$330
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 6/2
6:00 am-5:58 pm
1 stop9h 58m
Minneapolis St Paul
Wed 6/3
6:54 pm-11:56 pm
1 stop7h 02m
$338
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Sat 5/23
2:50 pm-11:15 pm
1 stop6h 25m
Milwaukee-Mitchell
Tue 5/26
4:05 pm-10:10 pm
2 stops8h 05m
$338
OntarioChicago
ONT - ORD
ONTORD
Ontario
Sat 4/18
7:05 am-6:48 pm
1 stop9h 43m
Chicago O'Hare Intl
Sat 4/25
5:15 am-11:36 am
1 stop8h 21m
$355
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Sat 4/25
10:54 am-9:58 pm
2 stops9h 04m
Green Bay Austin-Straubel
Sat 5/16
9:42 am-7:34 pm
2 stops11h 52m
$359
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Sat 4/25
1:29 pm-8:57 pm
1 stop5h 28m
Minneapolis St Paul
Tue 4/28
11:00 am-4:25 pm
1 stop7h 25m
$375
Quickest round-trip
OntarioChicago
ONT - ORD
ONTORD
Ontario
Wed 6/3
6:30 am-12:45 pm
Nonstop4h 15m
Chicago O'Hare Intl
Wed 6/10
8:13 pm-10:46 pm
Nonstop4h 33m
$387
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Mon 5/4
7:59 pm-2:13 pm
1 stop16h 14m
Milwaukee-Mitchell
Wed 5/6
7:00 am-2:30 pm
1 stop9h 30m
$390
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 6/2
6:00 am-5:58 pm
1 stop9h 58m
Minneapolis St Paul
Fri 6/5
5:16 pm-11:58 pm
1 stop8h 42m
$392
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 6/2
6:00 am-5:58 pm
1 stop9h 58m
Minneapolis St Paul
Thu 6/4
6:54 pm-11:56 pm
1 stop7h 02m
$392
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Wisconsin
Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
ONT-MSN
ONT-MKE
ONT-MSP
ONT-ORD
ONT-GRB
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Wisconsin
ONT-USWI
ONT-MSN
ONT-MKE
ONT-MSP
ONT-ORD
What is the cheapest month to book a flight from Ontario to Wisconsin?
Currently, May is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $94). Flying from Ontario to Wisconsin in January is currently the most expensive (average of $265). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Wisconsin
Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated March 18, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Wisconsin
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Wisconsin by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Wisconsin by cabin class
Find flights from Ontario to Wisconsin, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Wisconsin flights
Browse other Ontario and Wisconsin flight options. Last updated on March 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Wisconsin flights
Consider these flights traveling from Ontario to Wisconsin.
Top 4 airlines flying from Ontario to Wisconsin
Discover the top 4 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$442 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$595 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$502 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$326 | Average$416 | FlexibilityNo cancel fee | On-time63% |